Raindrinker

Spirit boon

You have been blessed by spirits of water, manifesting blue streaks or spots in your hair or scalp.

Thirstless. You don't require water to survive.

Water Treader. You ignore difficult terrain caused by water, ice, or mud.

Raincaller. You know the create water spell, and can cast it using your spell slots. Once per long rest, you can cast it with no components and without spending a slot, choosing the rain option only.